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authorKarel Kočí <cynerd@email.cz>2022-11-01 09:44:59 +0100
committerKarel Kočí <cynerd@email.cz>2022-11-01 09:44:59 +0100
commit955268e13f8f9422e7e89ee6350ec793dddd1e94 (patch)
tree1714aa5f8383ddf5aaaf7826c8502f686bcd8a7a /nixos/modules/omnia-kernel-patches/0044-PCI-pciehp-Enable-Command-Completed-Interrupt-only-i.patch
parent06293bfbb5082dc636358d49f3e6fea88c4f2a67 (diff)
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nixos: try to fix Turris Omnia PCIe on Linux 6.0
Unfortunatelly this seems to not work.
Diffstat (limited to 'nixos/modules/omnia-kernel-patches/0044-PCI-pciehp-Enable-Command-Completed-Interrupt-only-i.patch')
-rw-r--r--nixos/modules/omnia-kernel-patches/0044-PCI-pciehp-Enable-Command-Completed-Interrupt-only-i.patch38
1 files changed, 38 insertions, 0 deletions
diff --git a/nixos/modules/omnia-kernel-patches/0044-PCI-pciehp-Enable-Command-Completed-Interrupt-only-i.patch b/nixos/modules/omnia-kernel-patches/0044-PCI-pciehp-Enable-Command-Completed-Interrupt-only-i.patch
new file mode 100644
index 0000000..5a658e7
--- /dev/null
+++ b/nixos/modules/omnia-kernel-patches/0044-PCI-pciehp-Enable-Command-Completed-Interrupt-only-i.patch
@@ -0,0 +1,38 @@
+From 37248c705254f050fb67b107eb389a378ab0428e Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org>
+Date: Wed, 31 Mar 2021 15:14:29 +0200
+Subject: [PATCH 44/53] PCI: pciehp: Enable Command Completed Interrupt only if
+ supported
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The No Command Completed Support bit in the Slot Capabilities register
+indicates whether Command Completed Interrupt Enable is unsupported.
+
+Enable this interrupt only in the case it is supported.
+
+Signed-off-by: Pali Rohár <pali@kernel.org>
+Signed-off-by: Marek Behún <kabel@kernel.org>
+---
+ drivers/pci/hotplug/pciehp_hpc.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
+index ef807c79b1b1..a5199b312e74 100644
+--- a/drivers/pci/hotplug/pciehp_hpc.c
++++ b/drivers/pci/hotplug/pciehp_hpc.c
+@@ -817,7 +817,9 @@ static void pcie_enable_notification(struct controller *ctrl)
+ else
+ cmd |= PCI_EXP_SLTCTL_PDCE;
+ if (!pciehp_poll_mode)
+- cmd |= PCI_EXP_SLTCTL_HPIE | PCI_EXP_SLTCTL_CCIE;
++ cmd |= PCI_EXP_SLTCTL_HPIE;
++ if (!pciehp_poll_mode && !NO_CMD_CMPL(ctrl))
++ cmd |= PCI_EXP_SLTCTL_CCIE;
+
+ mask = (PCI_EXP_SLTCTL_PDCE | PCI_EXP_SLTCTL_ABPE |
+ PCI_EXP_SLTCTL_PFDE |
+--
+2.37.3
+